Add maui desktop testing

eng/performance/maui_desktop_benchmarks.proj

@@ -0,0 +1,19 @@
+<Project Sdk="Microsoft.DotNet.Helix.Sdk" DefaultTargets="Test">
+
+  <Import Project="Scenarios.Common.props" />
+
+  <!-- MAUI Desktop BenchmarkDotNet benchmarks
+       Clones dotnet/maui, builds dependencies, patches in PerfLabExporter,
+       and runs the Core, XAML, and Graphics BDN benchmark suites. -->
+
+  <ItemGroup Condition="'$(TargetsWindows)' == 'true'">
+    <HelixWorkItem Include="MAUI Desktop BDN Benchmarks">
+      <PayloadDirectory>$(ScenariosDir)mauiDesktopBenchmarks</PayloadDirectory>
+      <PreCommands>$(Python) pre.py -f $(PERFLAB_Framework)</PreCommands>
+      <Command>$(Python) test.py --framework $(PERFLAB_Framework) --suite all</Command>
+      <PostCommands>$(Python) post.py</PostCommands>
+    </HelixWorkItem>
+  </ItemGroup>
+
+  <Import Project="PreparePayloadWorkItems.targets" />
+</Project>

eng/pipelines/sdk-perf-jobs.yml

@@ -93,6 +93,21 @@ jobs:
           ${{ each parameter in parameters.jobParameters }}:
             ${{ parameter.key }}: ${{ parameter.value }}
 
+  # MAUI Desktop BenchmarkDotNet benchmarks
+  - template: /eng/pipelines/templates/build-machine-matrix.yml
+    parameters:
+      jobTemplate: /eng/pipelines/templates/run-scenarios-job.yml
+      buildMachines:
+        - win-x64
+      isPublic: true
+      jobParameters:
+        runKind: maui_desktop_benchmarks
+        projectFileName: maui_desktop_benchmarks.proj
+        channels:
+          - main
+        ${{ each parameter in parameters.jobParameters }}:
+          ${{ parameter.key }}: ${{ parameter.value }}
+
   # Blazor scenario benchmarks
   - template: /eng/pipelines/templates/build-machine-matrix.yml
     parameters:
@@ -623,6 +638,21 @@ jobs:
           ${{ each parameter in parameters.jobParameters }}:
             ${{ parameter.key }}: ${{ parameter.value }}
 
+  # MAUI Desktop BDN benchmarks (private)
+  - template: /eng/pipelines/templates/build-machine-matrix.yml
+    parameters:
+      jobTemplate: /eng/pipelines/templates/run-scenarios-job.yml
+      buildMachines:
+        - win-x64-viper
+      isPublic: false
+      jobParameters:
+        runKind: maui_desktop_benchmarks
+        projectFileName: maui_desktop_benchmarks.proj
+        channels:
+          - main
+        ${{ each parameter in parameters.jobParameters }}:
+          ${{ parameter.key }}: ${{ parameter.value }}
+
   # NativeAOT scenario benchmarks
   - template: /eng/pipelines/templates/build-machine-matrix.yml
     parameters:

src/harness/BenchmarkDotNet.Extensions/ExclusionFilter.cs

@@ -6,7 +6,7 @@
 
 namespace BenchmarkDotNet.Extensions
 {
-    class ExclusionFilter : IFilter
+    public class ExclusionFilter : IFilter
     {
         private readonly GlobFilter? globFilter;
 

src/scenarios/mauiDesktopBenchmarks/post.py

@@ -0,0 +1,28 @@
+'''
+Post-commands for MAUI Desktop BenchmarkDotNet benchmarks.
+Cleans up the cloned maui repo and temporary artifacts.
+'''
+import os
+from performance.common import remove_directory
+from performance.logger import setup_loggers, getLogger
+
+setup_loggers(True)
+log = getLogger(__name__)
+
+# Match the absolute-path resolution used by test.py so cleanup finds the
+# checkout regardless of the cwd post.py inherits.
+MAUI_REPO_DIRNAME = 'maui_repo'
+MAUI_REPO_DIR = os.path.abspath(MAUI_REPO_DIRNAME)
+
+
+def cleanup():
+    """Remove the cloned maui repository."""
+    if os.path.exists(MAUI_REPO_DIR):
+        log.info(f'Removing cloned MAUI repo: {MAUI_REPO_DIR}')
+        remove_directory(MAUI_REPO_DIR)
+
+    log.info('Post-commands cleanup complete.')
+
+
+if __name__ == '__main__':
+    cleanup()

src/scenarios/mauiDesktopBenchmarks/pre.py

@@ -0,0 +1,19 @@
+'''
+Pre-commands for MAUI Desktop BenchmarkDotNet benchmarks.
+Kept minimal — all heavy lifting (clone, build, patch, run) is in test.py
+to keep the correlation payload small.
+'''
+import argparse
+from performance.logger import setup_loggers, getLogger
+
+setup_loggers(True)
+log = getLogger(__name__)
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser(description='MAUI Desktop BDN Benchmarks - Pre-commands')
+    parser.add_argument('-f', '--framework', default='net11.0',
+                        help='Target .NET framework (determines MAUI branch)')
+    args = parser.parse_args()
+    log.info(f'MAUI Desktop BDN Benchmarks pre-commands (framework={args.framework})')
+    log.info('Setup deferred to test.py to minimize correlation payload.')
+